1.Department of Cranio-Maxillofacial Surgery, University HospitalUniversity of BernBernSwitzerland2.Department of Oral and Maxillofacial Surgery, School of Life Dentistry at NiigataThe Nippon Dental UniversityNiigataJapan3.Department of Oral Surgery, Clinical Dentistry, Institute of Biomedical SciencesTokushima University Graduate SchoolTokushimaJapan4.Department of Periodontology, School of Dental MedicineUniversity of BernBernSwitzerland5.Department of Oral Surgery and Stomatology, School of Dental MedicineUniversity of BernBernSwitzerland6.Department of PeriodontologySemmelweis UniversityBudapestHungary7.Department of Periodontology, College of Dental MedicineNova Southeastern UniversityFort LauderdaleUSA8.Cell Therapy Institute, Center for Collaborative ResearchNova Southeastern UniversityFort LauderdaleUSA